1317000356549 has 2 divisors, whose sum is σ = 1317000356550. Its totient is φ = 1317000356548.

The previous prime is 1317000356533. The next prime is 1317000356599. The reversal of 1317000356549 is 9456530007131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1200080812324 + 116919544225 = 1095482^2 + 341935^2 .

It is a cyclic number.

It is not a de Polignac number, because 1317000356549 - 2⁴ = 1317000356533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1317000356599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658500178274 + 658500178275.

It is an arithmetic number, because the mean of its divisors is an integer number (658500178275).

Almost surely, 2^{1317000356549} is an apocalyptic number.

It is an amenable number.

1317000356549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317000356549 is an equidigital number, since it uses as much as digits as its factorization.

1317000356549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 340200, while the sum is 44.

The spelling of 1317000356549 in words is "one trillion, three hundred seventeen billion, three hundred fifty-six thousand, five hundred forty-nine".